Arduino Compatible Boards

ESP32 Boards

HTIT-WB32 (WIFI Kit 32)

ESP-WROOM-32 NODEMCU

Board in Arduino: ESP32 Dev Module

Features:

• 802.11b/g/n (802.11n, speed up to 150Mbps)
• WiFi Frequency Range 2.4GHz ~ 2.5GHz
• Clock frequency adjustment range from 80MHz to 240MHz, support for RTOS
• Built-in 2-channel 12-bit high precision ADC with up to 18 channels
• Supports UART/GPIO/ADC/DAC/SDIO/SD Card/PWM/I2C/I2S interface
• Supports multiple sleep modes, ESP32 chip sleep current is less than 5μA
• Embedded Lwip protocol stack
• Supports STA/AP/STA + AP operation mode
• Supports remote firmware upgrade (FOTA)
• General AT commands can be used quickly
• Supports secondary development, integrated Windows, Linux development environment

No	Pin Name	Pin No	Type	Function
1	3V3	2	P	Module power supply pin
2	EN	3	I	Chip Enable Pin, Active High
3	SVP SENSOR_VP	4	I	GPIO36, ADC1_CH0, RTC_GPIO0
4	SVN SENSOR_VN	5	I	GPIO39 ADC1_CH3 RTC_GPIO3
5	P34 IO34	6	I	GPIO34 ADC1_CH6 RTC_GPIO4
6	P35 IO35	7	I	GPIO35 ADC1_CH7 RTC_GPIO5
7	P32 IO32	8	I/O	GPIO32, XTAL_32K_P (32.768 kHz Crystal input ), ADC1_CH4, TOUCH9, RTC_GPIO9
8	P33 IO33	9	I/O	GPIO33, XTAL_32K_N (32.768 kHz Crystal out put ), ADC1_CH5, TOUCH8, RTC_GPIO8
9	P25 IO25	10	I/O	GPIO25 DAC_1 ADC2_CH8, RTC_GPIO6 EMAC_RXD0
10	P26 IO26	11	I/O	GPIO26 DAC_2 ADC2_CH9 RTC_GPIO7, EMAC_RX_DV
11	P27 IO27	12	I/O	GPIO27 ADC2_CH7 TOUCH7 RTC_GPIO17, EMAC_RX_DV
12	P14 IO13	13	I/O	GPIO14, ADC2_CH6, TOUCH6, RTC_ GPIO16, MTMS, HSPICLK, HS2_CLK, SD_CLK, EMAC_TXD2
13	P12 IO12	14	I/O	GPIO12, ADC2_CH5, TOUCH5, RTC_ GPIO15, MTDI, HSPIQ, HS2_DATA2, SD_DATA2, EMAC_TXD3
14	GND	15	P	Ground
15	P13 IO13	16	I/O	GPIO13, ADC2_CH4, TOUCH4, RTC_ GPIO14, MTCK, HSPID, HS2_DATA3, SD_DATA3, EMAC_ RX_ER
16	SHD/SD2	17	I/O	GPIO9, SD_DATA2, SPIHD, HS1_DATA2, U1RXD
17	SWP/SD3	18	I/O	GPIO10, SD_DATA3, SPIWP, HS1_DATA3, U1TXD
18	SCS/CMD	19	I/O	GPIO11, SD_CMD, SPICS0, HS1_CMD, U1RTS
19	5V		P	Module power supply pin
20	SCK/CLK	20	I/O	GPIO6, SD_CLK, SPICLK, HS1_CLK, U1CTS
21	SDO/SD0	21	I/O	GPIO7, SD_DATA0, SPIQ, HS1_DATA0, U2RTS
22	SDISD1	22	I/O	GPIO8, SD_DATA1, SPID, HS1_DATA1, U2CTS
23	P15 IO15	23	I/O	GPIO15, ADC2_CH3, TOUCH3, MTDO , HSPICS0, RTC_GPIO13, HS2_CMD, SD_CMD, EMAC_RXD3
24	P2 IO2	24	I/O	GPIO2, ADC2_CH2, TOUCH2, RTC_GPIO12, HSPIWP, HS2_DATA0, SD_DATA0
25	P0 IO0	25	I/O	GPIO0, ADC2_CH1, TOUCH1, CLK_OUT1, RTC_GPIO11, EMAC_TX_CLK Download mode: external pull low, running mode: floating or external pull high
26	P4 IO4	26	I/O	GPIO4, ADC2_CH0, TOUCH0, RTC_GPIO10, HSPIHD, HS2_DATA1, SD_DATA1, EMAC_TX_ER
27	P16 IO16	27	I/O	GPIO16, HS1_DATA4, U2RXD, EMAC_CLK_OUT
28	P17 IO17	28	I/O	GPIO17, HS1_DATA5, U2TXD, EMAC_CLK_OUT_180
29	P5 IO5	29	I/O	GPIO5, VSPICS0, HS1_DATA6, EMAC_RX_CLK
30	P18 IO18	30	I/O	GPIO18, VSPICLK, HS1_DATA7
31	P19 IO19	31	I/O	GPIO19, VSPIQ, U0CTS, EMAC_TXD0
32	GND		P	GND
33	P21 IO21	33	I/O	GPIO21, VSPIHD, EMAC_TX_EN
34	RX RXD0	34	I/O	GPIO3, U0RXD, CLK_OUT2
35	TX TXD0	35	I/O	GPIO1, U0TXD, CLK_OUT3, EMAC_RXD2
36	P22 IO22	36	I/O	GPIO22, VSPIWP, U0RTS, EMAC_TXD1
37	P23 IO23	37	I/O	GPIO23, VSPID, HS1_STROBE
38	GND	38	P	GND

Schematics

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